.roundedRectangle {
    height: 70px;
    width: 100px;
    margin-top: 100px;
    float: left;
    background: #9BD1FA;
/ / 背景色 border-width: 20 px;
/ / 边缘的宽度，如果要分别设置可以这样：border-width: 15 px 5 px 15 px 5 px;
    依次为上、右、下、左 border-style: solid;
    border-radius: 15px;
/ / 圆角的大小 border-color: #000 #000 #000 #000;
/ / 边框颜色，依次为上、右、下、左 text-align: center;
}

.roundedRectangle p {
    margin: 0px auto;
    padding: 20px;

    text-align: center;
    font-size: 20px;
    letter-spacing: 8px;
}

.center {
    height: 10px;
    width: 50px;
    margin-top: 130px;
    float: left;
    background: greenyellow;
/ / 背景色 border-style: solid;
}

.to_right {
    float: left;
    margin-top: 115px;
    width: 0;
    height: 0;
    border-left: 40px solid greenyellow;
    border-top: 20px solid transparent;
    border-bottom: 20px solid transparent;
}